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a62a7117d9
ACPICA commit 0c08790c56fdf0dc081ae869495a09d8c4230854 This change defers the resolution of package elements that are named references until after the entire namespace has been loaded from the definition block. This allows such references to be in fact forward references for both module level code and control methods. Link: https://github.com/acpica/acpica/commit/0c08790c Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
308 lines
10 KiB
C
308 lines
10 KiB
C
/******************************************************************************
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*
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* Module Name: nsarguments - Validation of args for ACPI predefined methods
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2017, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#include "acpredef.h"
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME("nsarguments")
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_check_argument_types
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*
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* PARAMETERS: info - Method execution information block
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*
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* RETURN: None
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*
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* DESCRIPTION: Check the incoming argument count and all argument types
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* against the argument type list for a predefined name.
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*
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******************************************************************************/
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void acpi_ns_check_argument_types(struct acpi_evaluate_info *info)
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{
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u16 arg_type_list;
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u8 arg_count;
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u8 arg_type;
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u8 user_arg_type;
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u32 i;
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/*
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* If not a predefined name, cannot typecheck args, because
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* we have no idea what argument types are expected.
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* Also, ignore typecheck if warnings/errors if this method
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* has already been evaluated at least once -- in order
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* to suppress repetitive messages.
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*/
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if (!info->predefined || (info->node->flags & ANOBJ_EVALUATED)) {
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return;
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}
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arg_type_list = info->predefined->info.argument_list;
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arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
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/* Typecheck all arguments */
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for (i = 0; ((i < arg_count) && (i < info->param_count)); i++) {
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arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
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user_arg_type = info->parameters[i]->common.type;
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if (user_arg_type != arg_type) {
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ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
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ACPI_WARN_ALWAYS,
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"Argument #%u type mismatch - "
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"Found [%s], ACPI requires [%s]",
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(i + 1),
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acpi_ut_get_type_name
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(user_arg_type),
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acpi_ut_get_type_name(arg_type)));
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/* Prevent any additional typechecking for this method */
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info->node->flags |= ANOBJ_EVALUATED;
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}
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_check_acpi_compliance
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*
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* PARAMETERS: pathname - Full pathname to the node (for error msgs)
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* node - Namespace node for the method/object
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* predefined - Pointer to entry in predefined name table
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*
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* RETURN: None
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*
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* DESCRIPTION: Check that the declared parameter count (in ASL/AML) for a
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* predefined name is what is expected (matches what is defined in
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* the ACPI specification for this predefined name.)
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*
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******************************************************************************/
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void
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acpi_ns_check_acpi_compliance(char *pathname,
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struct acpi_namespace_node *node,
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const union acpi_predefined_info *predefined)
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{
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u32 aml_param_count;
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u32 required_param_count;
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if (!predefined || (node->flags & ANOBJ_EVALUATED)) {
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return;
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}
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/* Get the ACPI-required arg count from the predefined info table */
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required_param_count =
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METHOD_GET_ARG_COUNT(predefined->info.argument_list);
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/*
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* If this object is not a control method, we can check if the ACPI
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* spec requires that it be a method.
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*/
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if (node->type != ACPI_TYPE_METHOD) {
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if (required_param_count > 0) {
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/* Object requires args, must be implemented as a method */
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ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
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ACPI_WARN_ALWAYS,
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"Object (%s) must be a control method with %u arguments",
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acpi_ut_get_type_name(node->
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type),
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required_param_count));
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} else if (!required_param_count
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&& !predefined->info.expected_btypes) {
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/* Object requires no args and no return value, must be a method */
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ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
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ACPI_WARN_ALWAYS,
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"Object (%s) must be a control method "
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"with no arguments and no return value",
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acpi_ut_get_type_name(node->
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type)));
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}
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return;
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}
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/*
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* This is a control method.
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* Check that the ASL/AML-defined parameter count for this method
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* matches the ACPI-required parameter count
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*
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* Some methods are allowed to have a "minimum" number of args (_SCP)
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* because their definition in ACPI has changed over time.
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*
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* Note: These are BIOS errors in the declaration of the object
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*/
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aml_param_count = node->object->method.param_count;
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if (aml_param_count < required_param_count) {
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ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
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"Insufficient arguments - "
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"ASL declared %u, ACPI requires %u",
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aml_param_count,
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required_param_count));
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} else if ((aml_param_count > required_param_count)
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&& !(predefined->info.
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argument_list & ARG_COUNT_IS_MINIMUM)) {
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ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
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"Excess arguments - "
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"ASL declared %u, ACPI requires %u",
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aml_param_count,
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required_param_count));
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_check_argument_count
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*
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* PARAMETERS: pathname - Full pathname to the node (for error msgs)
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* node - Namespace node for the method/object
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* user_param_count - Number of args passed in by the caller
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* predefined - Pointer to entry in predefined name table
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*
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* RETURN: None
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*
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* DESCRIPTION: Check that incoming argument count matches the declared
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* parameter count (in the ASL/AML) for an object.
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*
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******************************************************************************/
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void
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acpi_ns_check_argument_count(char *pathname,
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struct acpi_namespace_node *node,
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u32 user_param_count,
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const union acpi_predefined_info *predefined)
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{
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u32 aml_param_count;
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u32 required_param_count;
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if (node->flags & ANOBJ_EVALUATED) {
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return;
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}
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if (!predefined) {
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/*
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* Not a predefined name. Check the incoming user argument count
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* against the count that is specified in the method/object.
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*/
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if (node->type != ACPI_TYPE_METHOD) {
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if (user_param_count) {
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ACPI_INFO_PREDEFINED((AE_INFO, pathname,
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ACPI_WARN_ALWAYS,
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"%u arguments were passed to a non-method ACPI object (%s)",
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user_param_count,
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acpi_ut_get_type_name
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(node->type)));
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}
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return;
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}
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/*
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* This is a control method. Check the parameter count.
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* We can only check the incoming argument count against the
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* argument count declared for the method in the ASL/AML.
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*
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* Emit a message if too few or too many arguments have been passed
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* by the caller.
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*
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* Note: Too many arguments will not cause the method to
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* fail. However, the method will fail if there are too few
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* arguments and the method attempts to use one of the missing ones.
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*/
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aml_param_count = node->object->method.param_count;
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if (user_param_count < aml_param_count) {
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ACPI_WARN_PREDEFINED((AE_INFO, pathname,
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ACPI_WARN_ALWAYS,
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"Insufficient arguments - "
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"Caller passed %u, method requires %u",
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user_param_count,
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aml_param_count));
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} else if (user_param_count > aml_param_count) {
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ACPI_INFO_PREDEFINED((AE_INFO, pathname,
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ACPI_WARN_ALWAYS,
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"Excess arguments - "
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"Caller passed %u, method requires %u",
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user_param_count,
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aml_param_count));
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}
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return;
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}
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/*
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* This is a predefined name. Validate the user-supplied parameter
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* count against the ACPI specification. We don't validate against
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* the method itself because what is important here is that the
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* caller is in conformance with the spec. (The arg count for the
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* method was checked against the ACPI spec earlier.)
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*
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* Some methods are allowed to have a "minimum" number of args (_SCP)
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* because their definition in ACPI has changed over time.
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*/
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required_param_count =
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METHOD_GET_ARG_COUNT(predefined->info.argument_list);
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if (user_param_count < required_param_count) {
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ACPI_WARN_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
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"Insufficient arguments - "
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"Caller passed %u, ACPI requires %u",
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user_param_count, required_param_count));
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} else if ((user_param_count > required_param_count) &&
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!(predefined->info.argument_list & ARG_COUNT_IS_MINIMUM)) {
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ACPI_INFO_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
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"Excess arguments - "
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"Caller passed %u, ACPI requires %u",
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user_param_count, required_param_count));
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}
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}
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